House of Blood

"House of Blood" aka "Chain Reaction" - A prison bus, with over a dozen criminals on board, has an accident and hits another car, in which Dr. Douglas Madsen is on his way home. Most of the prisoners die. Four of them survive, one of them severely injured. After killing all the guards, they head for the woods. They take Dr. Douglas Madsen hostage. Suddenly a house appears in the woods...